import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';

///value: 文本内容；fontSize : 文字的大小；fontWeight：文字权重；maxWidth：文本框的最大宽度；maxLines：文本支持最大多少行
double calculateTextHeight(String value, fontSize, FontWeight fontWeight, double maxWidth, int maxLines) {
//value = filterText(value);
  TextPainter painter = TextPainter(
    ///AUTO：华为手机如果不指定locale的时候，该方法算出来的文字高度是比系统计算偏小的。
//locale: Localizations.localeOf(GlobalStatic.context, nullOk: true),
    maxLines: maxLines,
    textDirection: TextDirection.ltr,
    text: TextSpan(
      text: value,
      style: TextStyle(
        fontWeight: fontWeight,
        fontSize: fontSize,
      ),
    ),
  );
  painter.layout(maxWidth: maxWidth);

  ///文字的宽度:painter.width
  return painter.height;
}

bool isPhoneString(String? str) {
  if (str == null) return false;
  return new RegExp('^((13[0-9])|(14[0-9])|(15[0-9])|(16[0-9])|(17[0-8])|(18[0-9])|(19[0-9])|(147,145,146))\\d{8}\$')
      .hasMatch(str);
}

// 校验身份证合法性
bool verifyCardId(String cardId) {
  const Map city = {11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 "};
  String tip = '';
  bool pass = true;

  RegExp cardReg = RegExp(r'^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$');
  if(cardId == null || cardId.isEmpty || !cardReg.hasMatch(cardId)) {
    tip = '身份证号格式错误';
    print(tip);
    pass = false;
    return pass;
  }
  if(city[int.parse(cardId.substring(0,2))] == null) {
    tip = '地址编码错误';
    print(tip);
    pass = false;
    return pass;
  }
  // 18位身份证需要验证最后一位校验位，15位不检测了，现在也没15位的了
  if (cardId.length == 18) {
    List numList = cardId.split('');
    //∑(ai×Wi)(mod 11)
    //加权因子
    List factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
    //校验位
    List parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
    int sum = 0;
    int ai = 0;
    int wi = 0;
    for (var i = 0; i < 17; i++) {
      ai = int.parse(numList[i]);
      wi = factor[i];
      sum += ai * wi;
    }
    var last = parity[sum % 11];
    if (parity[sum % 11].toString() != numList[17]) {
      tip = "校验位错误";
      print(tip);
      pass = false;
    }
  }else {
    tip = '身份证号不是18位';
    print(tip);
    pass = false;
  }
//  print('证件格式$pass');
  return pass;
}



bool isPassword(String str) {
  if (str == null) return false;
  return str.length >= 6 && str.length <= 16;
}

bool isCode(String str, {int length = 4}) {
  if (str == null) return false;
  return str.length == length;
}

class CallsAndMessagesService {
  static void call(String number) => launch("tel:$number");

  static void sendSms(String number) => launch("sms:$number");

  static void sendEmail(String email) => launch("mailto:$email");
}
